Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual Congresso tem um # de co-patrocinadores de 19?
 ###Tabelas: CREATE TABLE municipalities_of_midhordland (municipalities_of_midhordland_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Innhabitants INT, Area INT, Mayor VARCHAR, Party VARCHAR, Municipal code INT, Language form VARCHAR) CREATE TABLE england_in_south_africa_1913_4 (england_in_south_africa_1913_4_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Home captain VARCHAR, Away captain VARCHAR, Venue VARCHAR, Result VARCHAR) CREATE TABLE legislative_activity (legislative_activity_id AUTO_INCREMENT PRIMARY KEY, Congress VARCHAR, Bill number(s) VARCHAR, Date introduced VARCHAR, Sponsor(s) VARCHAR, # of cosponsors INT) CREATE TABLE riders'_jersey_progress_table (riders'_jersey_progress_table_id AUTO_INCREMENT PRIMARY KEY, Stage INT, Winner VARCHAR, General classification VARCHAR, Mountains classification VARCHAR, Points classification VARCHAR, Sprints classification VARCHAR, Team classification VARCHAR) CREATE TABLE table_presidential_elections (table_presidential_elections_id AUTO_INCREMENT PRIMARY KEY, Election VARCHAR, Candidate VARCHAR, Number of votes VARCHAR, Share of votes VARCHAR, Outcome of election VARCHAR)  
SELECT Congress FROM legislative_activity WHERE # of cosponsors = 19